<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card class="box-card">
      <el-form ref="form" :model="queryInfo" label-width="110px">
        <el-row>
          <el-col :span="8">
            <el-form-item label="用户名：">
              <el-input @clear="getUserList" v-model="queryInfo.query" placeholder="请输入用户名"></el-input>
            </el-form-item>
          </el-col>
        </el-row>

        <el-row style="float: right">
          <el-button type="primary" size="small" @click="getUserList">查 询</el-button>
          <el-button type="warning" size="small" @click="resetQueryInfo">重 置</el-button>
        </el-row>
      </el-form>

      <el-button type="primary" size="small" style="margin-top: 10px" @click="addDialogVisible = true">
        添加用户
      </el-button>

      <!-- 表格展示 -->
      <el-table :data="userlist" border stripe fit>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username" align="center"></el-table-column>
        <el-table-column label="邮箱" prop="email" align="center"></el-table-column>
        <el-table-column label="电话" prop="mobile" align="center"></el-table-column>
        <el-table-column label="角色" prop="role_name" align="center"></el-table-column>
        <el-table-column label="状态" align="center">
          <template slot-scope="scope">
            <el-switch @change="userStateChange(scope.row)" v-model="scope.row.mg_state"> </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="创建时间" prop="create_time" align="center">
          <template slot-scope="scope">
            {{ scope.row.create_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="更新时间" prop="update_time" align="center">
          <template slot-scope="scope">
            {{ scope.row.update_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" align="center">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button @click="showEditDialog(scope.row.id)" type="primary" icon="el-icon-edit" size="mini"></el-button>

            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>

            <!-- 分配角色按钮 -->
            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog @close="addDialogClosed" title="添加用户" :visible.sync="addDialogVisible" width="50%">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="110px">
        <el-form-item label="用户名：" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>

        <el-form-item label="密码：" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>

        <el-form-item label="邮箱：" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>

        <el-form-item label="手机：" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户信息对话框 -->
    <el-dialog @close="editDialogClosed" title="修改用户信息" :visible.sync="editDialogVisible" width="50%">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="110px">
        <el-form-item label="用户名：">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>

        <el-form-item label="邮箱：" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>

        <el-form-item label="手机号：" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前用户： {{ userInfo.username }}</p>
        <p>当前角色： {{ userInfo.role_name }}</p>
        <p>
          分配角色：
          <el-select v-model="selectedRoleId" placeholder="请选择角色">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
          </el-select>
        </p>
      </div>

      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import { getUserList, putUserState, postAddUsers, getUserInfoById, putEditUserInfo, deleteUserById } from '@/api/users'
import { getRoles, putUsersRole } from '@/api/roles'

export default {
  name: 'user',
  data() {
    // 自定义验证邮箱规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmail.test(value)) {
        // 合法邮箱
        return cb()
      }
      cb(new Error('请输入正确的邮箱'))
    }
    // 自定义验证手机号规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if (regMobile.test(value)) {
        // 合法手机号
        return cb()
      }
      cb(new Error('请输入正确的手机号'))
    }

    return {
      // 获取用户列表参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 5
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示和隐藏
      addDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
        addTime: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入电话', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制修改用户信息对话框的展示和隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入电话', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色 id 值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList() {
      const res = await getUserList(this.queryInfo)
      if (res.meta.status !== 200) {
        this.$message.error('获取用户列表失败!')
      } else {
        this.userlist = res.data.users
        this.total = res.data.total
      }
    },

    // 重置查询条件
    async resetQueryInfo() {
      this.queryInfo.query = ''
      const res = await getUserList(this.queryInfo)
      if (res.meta.status !== 200) {
        this.$message.error('获取用户列表失败!')
      } else {
        this.userlist = res.data.users
        this.total = res.data.total
      }
    },

    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },

    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },

    // 监听 Switch 开关状态的改变
    async userStateChange(userinfo) {
      const res = await putUserState(userinfo)
      if (res.meta.status === 200) {
        userinfo.mg_state = !userinfo.mg_state
        this.$message.success(res.meta.msg)
        this.getUserList()
      } else {
        this.$message.error(res.meta.msg)
      }
    },

    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },

    // 点击确定按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (valid) {
          // 验证通过后发起添加用户的网络请求
          const res = await postAddUsers(this.addForm)
          if (res.meta.status === 201) {
            this.$message.success(res.meta.msg)
            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            // 重新获取用户列表数据
            this.getUserList()
          } else {
            this.$message.error(res.meta.msg)
          }
        }
      })
    },

    // 展示编辑用户信息的对话框
    async showEditDialog(id) {
      const res = await getUserInfoById(id)
      if (res.meta.status === 200) {
        this.editForm = res.data
        this.editDialogVisible = true
      } else {
        this.$message.error(res.meta.msg)
      }
    },

    // 监听修改用户信息对话框关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },

    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (valid) {
          // 发起修改用户信息的网络请求
          let params = this.editForm
          const res = await putEditUserInfo(params)
          if (res.meta.status === 200) {
            // 关闭对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success(res.meta.msg)
          } else {
            return this.$message.error(res.meta.msg)
          }
        }
      })
    },

    // 根据 id 删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => {
        return err
      })
      if (confirmResult === 'confirm') {
        const res = await deleteUserById(id)
        if (res.meta.status === 200) {
          this.$message.success(res.meta.msg)
          this.getUserList()
        } else {
          this.$message.error(res.meta.msg)
        }
      }
    },

    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前获取所有角色的列表
      const res = await getRoles()
      if (res.meta.status === 200) {
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      } else {
        this.$message.error('获取角色列表失败')
      }
    },

    // 点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      let params = {
        id: this.userInfo.id,
        rid: this.selectedRoleId
      }
      const res = await putUsersRole(params)
      if (res.meta.status === 200) {
        this.$message.success('更新角色成功')
        this.getUserList()
        this.setRoleDialogVisible = false
      } else {
        this.$message.error('更新角色失败')
      }
    },

    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style scoped></style>
